Diff.php

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<?php

namespace cogpowered\FineDiff;

use cogpowered\FineDiff\Granularity\GranularityInterface;
use cogpowered\FineDiff\Render\RendererInterface;
use cogpowered\FineDiff\Parser\ParserInterface;
use cogpowered\FineDiff\Granularity\Character;
use cogpowered\FineDiff\Render\Html;
use cogpowered\FineDiff\Parser\Parser;

class Diff
{
    protected $granularity;

    protected $renderer;

    protected $parser;

    public function __construct(GranularityInterface $granularity = null, RendererInterface $renderer = null, ParserInterface $parser = null)
    {
        // Set some sensible defaults

        // Set the granularity of the diff
        $this->granularity = ($granularity !== null) ? $granularity : new Character;

        // Set the renderer to use when calling Diff::render
        $this->renderer = ($renderer !== null) ? $renderer : new Html;

        // Set the diff parser
        $this->parser = ($parser !== null) ? $parser : new Parser($this->granularity);
    }

    public function getGranularity()
    {
        return $this->parser->getGranularity();
    }

    public function setGranularity(GranularityInterface $granularity)
    {
        $this->parser->setGranularity($granularity);
    }

    public function getRenderer()
    {
        return $this->renderer;
    }

    public function setRenderer(RendererInterface $renderer)
    {
        $this->renderer = $renderer;
    }

    public function getParser()
    {
        return $this->parser;
    }

    public function setParser(ParserInterface $parser)
    {
        $this->parser = $parser;
    }

    public function getOpcodes($from_text, $to_text)
    {
        return $this->parser->parse($from_text, $to_text);
    }

    public function render($from_text, $to_text)
    {
        // First we need the opcodes
        $opcodes = $this->getOpcodes($from_text, $to_text);

        return $this->renderer->process($from_text, $opcodes);
    }
}